diff --git a/src/ChangeLog b/src/ChangeLog
index 86ba0a16..27778fde 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,7 @@
+2006-04-11  Hrvoje Niksic  <hniksic@xemacs.org>
+
+	* hash.c (TOLOWER): Wrap macro arg in parentheses.
+
 2006-04-08  Hrvoje Niksic  <hniksic@xemacs.org>
 
 	* http.c (parse_content_disposition): Doc fix.
diff --git a/src/hash.c b/src/hash.c
index f3b4be10..8b672000 100644
--- a/src/hash.c
+++ b/src/hash.c
@@ -54,7 +54,7 @@ so, delete this exception statement from your version.  */
 #  define countof(x) (sizeof (x) / sizeof ((x)[0]))
 # endif
 # include <ctype.h>
-# define TOLOWER(x) tolower ((unsigned char) x)
+# define TOLOWER(x) tolower ((unsigned char) (x))
 # if __STDC_VERSION__ >= 199901L
 #  include <stdint.h>  /* for uintptr_t */
 # else